8″ x 3″ Ultra High Capacity Polymer – Stainless Steel Model 50 Rigid Caster
$987.42
Technical Specifications











Description
Stainless Steel Rigid Caster Model 50 are the heaviest duty stainless steel rigid casters that we manufacture. These Rigid casters have a taller overall height and a larger mounting plate than Stainless Steel Model 30. It features superior performance on both manually moved and mechanically powered equipment. The Stainless Steel Model 50 rigid caster frames are constructed from 304 SS and given electrolytic polishing to a shining finish . There are grease fittings for the wheel bearings in the axle. NSF and ROHS Compliant.
Rigid casters are usually attached to equipment at the opposite end of where the push handle and the swivel casters are attached. This enables the person pushing the equipment to be able to control the direction of travel. It should also be stressed that Rigid casters have 2 legs perpendicular to the mount plate, therefore they can not move sideways. Equipment with 2 rigid casters and 2 swivel casters must be maneuvered into position. For more information and/or help placing an order, please give us a call at 800-501-3808.
Ultra High Capacity Polymer Wheel Precision Ball Bearings in wheel. Nylon wheels are an excellent choice for supporting heavy loads without using a metal wheel since they can not develop a flat spot. Nylon is resistant to greases, oils, blood, acids, bases and more. This industrial caster wheel comes in 3″ wide, and comes in diameters ranging from 6” to 10”.
*Photo of this 8″ x 3″ Ultra High Capacity Polymer with Stainless Steel Precision Bearings
For more information and help placing an order, give us a call at 800-501-3808.
If you need this caster with a SMALLER mounting plate fastening option, Caster City manufactures Stainless Steel Caster Model 30.
Application Use:
- Dough Troughs
- Tow Line
- Platform Trucks
- Scrap Metal Carriers
- Trash Gondola
- Fixture Carts
- Drywall Dollies
- Autoclave Dollies
- Powder Coating Racks
- Heavy Duty Power Drawn Applications
- Machinery Dollies
- Cradle Dollies
- Gantry Cranes
The Inner Workings of the Ultra High Capacity Polymer Caster Wheels

Ultra High Capacity Polymer Caster Wheels from Caster City are engineered to support heavy loads while protecting floors from the damage typically caused by metal wheels. Unlike polyurethane wheels, which can develop flat spots or delaminate under prolonged static loads, these non-marking black polymer wheels are compression molded and machined for superior durability and performance. Their straight-sided design maximizes load capacity, making them an ideal choice for indoor applications on smooth surfaces where floor preservation is critical. Available in 2”, 3”, and 4” widths and diameters ranging from 3” to 12”, these wheels are equipped with 2 to 4 precision sealed ball bearings (depending on size) for smooth operation and long service life. With a hardness of 80 Shore D and a temperature range of -20°F to 250°F, they resist corrosion, chemicals, and impacts, offering a robust alternative to steel wheels.
These wheels are designed for a wide range of heavy-duty applications across industries, including material handling, manufacturing, warehousing, aerospace, automotive, and more. Their flat tread face ensures stable load distribution, and the compression molding process eliminates the risk of flat spots, making them perfect for equipment like platform trucks, assembly line carts, or automated guided vehicles (AGVs) that remain stationary under heavy loads. Capable of withstanding shocks, chemicals, oils, and acids, these wheels are also suitable for harsh environments like chemical plants, food processing facilities, or marine applications. For high-temperature settings (up to 250°F) or specialized needs, such as stainless steel bearings or roller bearings, Caster City offers customizable options to meet your requirements. For further assistance, contact our engineering team at 800-501-3808.
Features of Ultra High Capacity Polymer Caster Wheels:
- Non-Marking Black Polymer: Prevents floor damage, unlike metal wheels.
- Compression Molded & Machined: Ensures durability and eliminates flat spots or delamination.
- Straight-Sided Design: Maximizes load capacity for heavy-duty applications.
- Precision Sealed Ball Bearings: 2–4 bearings (for 3” and 4” wide wheels) for smooth operation.
- Tread Face: Flat for stable load distribution.
- Hardness: 80 Shore D for excellent durability.
- Temperature Range: -20°F to 250°F (approximate melting point: 500°F).
- Chemical Resistance: Resists corrosion, acids, oils, greases, and more.
- Bearing Options: Available with plain bore, precision sealed ball bearings, roller bearings, or stainless steel bearings.
- Sizes: 1.25” and 2” widths for 3”–8” diameters; 2”, 3”, and 4” widths for 3”–12” diameters
Our #1 goal is to help you find the best caster and wheels for your needs. If you need help finding the right casters, contact our team of professionals. You can also customize many of our casters with a variety of options such as swivel locks, wheel brakes and zerk fittings. We ship our products from assembly plants in Georgia, Pennsylvania, Virginia, Texas, Nevada and Canada. Whether you’re a one-man shop or a global giant, we can provide you with: We specialize in Business to Business, however, consumer orders are gladly accepted and we can provide you with:
- Fastest Lead Time in the Industry
- Caster performance data.
- Comparative data.
- Customized caster solutions.
- Help with caster solutions.
- Case studies by industry or application.
- Manufacturer and Distributor of over $25 million dollars in Finished Component Parts
- Majority of Orders Processed and Shipped in 2 Days or Less












